import java.util.Arrays;

public class OneArray {
    public static void main(String[] args) {
        int[] arr1 =new int[12];
        int [] arr2=new int[]{1,2,3,4};
        int [] arr3={2};


        int [] [] arr4={{3},{4}};
        int [] [] arr5=new int[3][4];
        int [][] arr6=new int [][]{{1,2,3},{4,5,6}};


        int [][] arr7=new int [3][];
        System.out.println(arr7[1]);
    }

}
